code: def test_line(benchmark, time_series):
      cvs = ds.Canvas(plot_height=300, plot_width=900)
      benchmark(cvs.line, time_series, "x", "y")
  
file_path: datashader/datashader/tests/benchmarks/test_canvas.py
imports: import pytest
  import os
  import numpy
  import pandas
  import datashader
label_desc: Use image node_id 2 for calling a global function with example usage: test_line(benchmark, time_series) without return types